CaII H Image of the Sun

 

Early this morning around UT5h17 weather conditions were rather good, with good transparancy but fair seeing.
On the east side a huge prominence is visible.


Setting: TSTLAPO80/480, Sol'Ex Pro 2nd Gen slit, ASI678MM
Herschel wedge
Sx/Sy < 1,1 Tilt <0,3°
Software: SharpCap, Inti, CS4, DeNoise AI

Sun H-Alpha and huge prominence

Early this morning around UT5h17 weather conditions were rather good, with good transparancy but fair seeing.

On the east side a huge prominence is visible.

Setting: TSTLAPO80/480, Sol'Ex Pro 2nd Gen slit, ASI678MM

Herschel wedge

Sx/Sy < 1,1 Tilt <0,3°

Software: SharpCap, Inti, CS4, DeNoise AI

JASON2025 June 21 & 22, 2025

Next weekend, June 21 and 22, MARS60 is organizing their Journées de l'Astronomie Solaire de l'Oise et du Nord @ Baron (France). My objective is to meet other Sol'Ex users and what's the next level.

200.000 visitors on my Blog

 

Reaching 200.000 visitors on my blog. Thank you all for reading my blogposts. 

Sunspot AR4100 third tour AR4055 and 4079

Sunspot AR4100 made his third tour around the Sun. I made images of all the three tours of this Sunspot. At first this was sunspot AR4055 in the beginning of April, on May 1, it was sunspot AR4079 and by end of May it was Sunspot AR4100.

Flare M3.5 in AR4100 with Sol'Ex in CaIIK

 

Flare M3.5 captured with Sol'Ex May 30, 2025

First light this morning around UT5h00. The objective was to test my new set up. My Sol'Ex pro 2nd Gen slit was equiped with a new adapter.

 
With this new Omegon adapter, the distance between Sol'Ex and Herschel Wedge is getting closer. As a result:

- more stable configuration of Sol'Ex as 1,25 tube is now amost entirely enclosed.

- getting more back focus; from 1cm to 3cm back focus

During imaging, the spectrum line did light up around sun spot AR4100. This was imaged both in CaIIK and H-Alpha. It was a moderate flare M3.5. See details below:

Setting:

TLAPO80/480 with Sol'Ex Pro 2nd Gen slit and ASI678MM

Herschel Wedge

Tilt <0,6° and Sx/Sy <1,1

Software: SharpCap, Inti, Jsolex, CS4, DeNoise AI